/
scp.c
1428 lines (1310 loc) · 33.1 KB
/
scp.c
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/* $OpenBSD: scp.c,v 1.198 2018/11/16 03:03:10 djm Exp $ */
/*
* scp - secure remote copy. This is basically patched BSD rcp which
* uses ssh to do the data transfer (instead of using rcmd).
*
* NOTE: This version should NOT be suid root. (This uses ssh to
* do the transfer and ssh has the necessary privileges.)
*
* 1995 Timo Rinne <tri@iki.fi>, Tatu Ylonen <ylo@cs.hut.fi>
*
* As far as I am concerned, the code I have written for this software
* can be used freely for any purpose. Any derived versions of this
* software must be clearly marked as such, and if the derived work is
* incompatible with the protocol description in the RFC file, it must be
* called by a name other than "ssh" or "Secure Shell".
*/
/*
* Copyright (c) 1999 Theo de Raadt. All rights reserved.
* Copyright (c) 1999 Aaron Campbell. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Parts from:
*
* Copyright (c) 1983, 1990, 1992, 1993, 1995
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include "includes.h"
#include <sys/types.h>
#ifdef HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif
#ifdef HAVE_POLL_H
#include <poll.h>
#else
# ifdef HAVE_SYS_POLL_H
# include <sys/poll.h>
# endif
#endif
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#include <sys/wait.h>
#include <sys/uio.h>
#include <ctype.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <locale.h>
#include <pwd.h>
#include <signal.h>
#include <stdarg.h>
#ifdef HAVE_STDINT_H
#include <stdint.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#if defined(HAVE_STRNVIS) && defined(HAVE_VIS_H) && !defined(BROKEN_STRNVIS)
#include <vis.h>
#endif
#include "xmalloc.h"
#include "ssh.h"
#include "atomicio.h"
#include "pathnames.h"
#include "log.h"
#include "misc.h"
#include "progressmeter.h"
#include "utf8.h"
extern char *__progname;
#define COPY_BUFLEN 16384
int do_cmd(char *host, char *remuser, int port, char *cmd, int *fdin, int *fdout);
int do_cmd2(char *host, char *remuser, int port, char *cmd, int fdin, int fdout);
/* Struct for addargs */
arglist args;
arglist remote_remote_args;
/* Bandwidth limit */
long long limit_kbps = 0;
struct bwlimit bwlimit;
/* Name of current file being transferred. */
char *curfile;
/* This is set to non-zero to enable verbose mode. */
int verbose_mode = 0;
/* This is set to zero if the progressmeter is not desired. */
int showprogress = 1;
/*
* This is set to non-zero if remote-remote copy should be piped
* through this process.
*/
int throughlocal = 0;
/* Non-standard port to use for the ssh connection or -1. */
int sshport = -1;
/* This is the program to execute for the secured connection. ("ssh" or -S) */
char *ssh_program = _PATH_SSH_PROGRAM;
/* This is used to store the pid of ssh_program */
pid_t do_cmd_pid = -1;
static void
killchild(int signo)
{
if (do_cmd_pid > 1) {
kill(do_cmd_pid, signo ? signo : SIGTERM);
waitpid(do_cmd_pid, NULL, 0);
}
if (signo)
_exit(1);
exit(1);
}
static void
suspchild(int signo)
{
int status;
if (do_cmd_pid > 1) {
kill(do_cmd_pid, signo);
while (waitpid(do_cmd_pid, &status, WUNTRACED) == -1 &&
errno == EINTR)
;
kill(getpid(), SIGSTOP);
}
}
static int
do_local_cmd(arglist *a)
{
u_int i;
int status;
pid_t pid;
if (a->num == 0)
fatal("do_local_cmd: no arguments");
if (verbose_mode) {
fprintf(stderr, "Executing:");
for (i = 0; i < a->num; i++)
fmprintf(stderr, " %s", a->list[i]);
fprintf(stderr, "\n");
}
if ((pid = fork()) == -1)
fatal("do_local_cmd: fork: %s", strerror(errno));
if (pid == 0) {
execvp(a->list[0], a->list);
perror(a->list[0]);
exit(1);
}
do_cmd_pid = pid;
signal(SIGTERM, killchild);
signal(SIGINT, killchild);
signal(SIGHUP, killchild);
while (waitpid(pid, &status, 0) == -1)
if (errno != EINTR)
fatal("do_local_cmd: waitpid: %s", strerror(errno));
do_cmd_pid = -1;
if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
return (-1);
return (0);
}
/*
* This function executes the given command as the specified user on the
* given host. This returns < 0 if execution fails, and >= 0 otherwise. This
* assigns the input and output file descriptors on success.
*/
int
do_cmd(char *host, char *remuser, int port, char *cmd, int *fdin, int *fdout)
{
int pin[2], pout[2], reserved[2];
if (verbose_mode)
fmprintf(stderr,
"Executing: program %s host %s, user %s, command %s\n",
ssh_program, host,
remuser ? remuser : "(unspecified)", cmd);
if (port == -1)
port = sshport;
/*
* Reserve two descriptors so that the real pipes won't get
* descriptors 0 and 1 because that will screw up dup2 below.
*/
if (pipe(reserved) < 0)
fatal("pipe: %s", strerror(errno));
/* Create a socket pair for communicating with ssh. */
if (pipe(pin) < 0)
fatal("pipe: %s", strerror(errno));
if (pipe(pout) < 0)
fatal("pipe: %s", strerror(errno));
/* Free the reserved descriptors. */
close(reserved[0]);
close(reserved[1]);
signal(SIGTSTP, suspchild);
signal(SIGTTIN, suspchild);
signal(SIGTTOU, suspchild);
/* Fork a child to execute the command on the remote host using ssh. */
do_cmd_pid = fork();
if (do_cmd_pid == 0) {
/* Child. */
close(pin[1]);
close(pout[0]);
dup2(pin[0], 0);
dup2(pout[1], 1);
close(pin[0]);
close(pout[1]);
replacearg(&args, 0, "%s", ssh_program);
if (port != -1) {
addargs(&args, "-p");
addargs(&args, "%d", port);
}
if (remuser != NULL) {
addargs(&args, "-l");
addargs(&args, "%s", remuser);
}
addargs(&args, "--");
addargs(&args, "%s", host);
addargs(&args, "%s", cmd);
execvp(ssh_program, args.list);
perror(ssh_program);
exit(1);
} else if (do_cmd_pid == -1) {
fatal("fork: %s", strerror(errno));
}
/* Parent. Close the other side, and return the local side. */
close(pin[0]);
*fdout = pin[1];
close(pout[1]);
*fdin = pout[0];
signal(SIGTERM, killchild);
signal(SIGINT, killchild);
signal(SIGHUP, killchild);
return 0;
}
/*
* This function executes a command similar to do_cmd(), but expects the
* input and output descriptors to be setup by a previous call to do_cmd().
* This way the input and output of two commands can be connected.
*/
int
do_cmd2(char *host, char *remuser, int port, char *cmd, int fdin, int fdout)
{
pid_t pid;
int status;
if (verbose_mode)
fmprintf(stderr,
"Executing: 2nd program %s host %s, user %s, command %s\n",
ssh_program, host,
remuser ? remuser : "(unspecified)", cmd);
if (port == -1)
port = sshport;
/* Fork a child to execute the command on the remote host using ssh. */
pid = fork();
if (pid == 0) {
dup2(fdin, 0);
dup2(fdout, 1);
replacearg(&args, 0, "%s", ssh_program);
if (port != -1) {
addargs(&args, "-p");
addargs(&args, "%d", port);
}
if (remuser != NULL) {
addargs(&args, "-l");
addargs(&args, "%s", remuser);
}
addargs(&args, "--");
addargs(&args, "%s", host);
addargs(&args, "%s", cmd);
execvp(ssh_program, args.list);
perror(ssh_program);
exit(1);
} else if (pid == -1) {
fatal("fork: %s", strerror(errno));
}
while (waitpid(pid, &status, 0) == -1)
if (errno != EINTR)
fatal("do_cmd2: waitpid: %s", strerror(errno));
return 0;
}
typedef struct {
size_t cnt;
char *buf;
} BUF;
BUF *allocbuf(BUF *, int, int);
void lostconn(int);
int okname(char *);
void run_err(const char *,...);
void verifydir(char *);
struct passwd *pwd;
uid_t userid;
int errs, remin, remout;
int pflag, iamremote, iamrecursive, targetshouldbedirectory;
#define CMDNEEDS 64
char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
int response(void);
void rsource(char *, struct stat *);
void sink(int, char *[]);
void source(int, char *[]);
void tolocal(int, char *[]);
void toremote(int, char *[]);
void usage(void);
int
main(int argc, char **argv)
{
int ch, fflag, tflag, status, n;
char **newargv;
const char *errstr;
extern char *optarg;
extern int optind;
/* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
sanitise_stdfd();
seed_rng();
msetlocale();
/* Copy argv, because we modify it */
newargv = xcalloc(MAXIMUM(argc + 1, 1), sizeof(*newargv));
for (n = 0; n < argc; n++)
newargv[n] = xstrdup(argv[n]);
argv = newargv;
__progname = ssh_get_progname(argv[0]);
memset(&args, '\0', sizeof(args));
memset(&remote_remote_args, '\0', sizeof(remote_remote_args));
args.list = remote_remote_args.list = NULL;
addargs(&args, "%s", ssh_program);
addargs(&args, "-x");
addargs(&args, "-oForwardAgent=no");
addargs(&args, "-oPermitLocalCommand=no");
addargs(&args, "-oClearAllForwardings=yes");
addargs(&args, "-oRemoteCommand=none");
addargs(&args, "-oRequestTTY=no");
fflag = tflag = 0;
while ((ch = getopt(argc, argv, "dfl:prtvBCc:i:P:q12346S:o:F:")) != -1)
switch (ch) {
/* User-visible flags. */
case '1':
fatal("SSH protocol v.1 is no longer supported");
break;
case '2':
/* Ignored */
break;
case '4':
case '6':
case 'C':
addargs(&args, "-%c", ch);
addargs(&remote_remote_args, "-%c", ch);
break;
case '3':
throughlocal = 1;
break;
case 'o':
case 'c':
case 'i':
case 'F':
addargs(&remote_remote_args, "-%c", ch);
addargs(&remote_remote_args, "%s", optarg);
addargs(&args, "-%c", ch);
addargs(&args, "%s", optarg);
break;
case 'P':
sshport = a2port(optarg);
if (sshport <= 0)
fatal("bad port \"%s\"\n", optarg);
break;
case 'B':
addargs(&remote_remote_args, "-oBatchmode=yes");
addargs(&args, "-oBatchmode=yes");
break;
case 'l':
limit_kbps = strtonum(optarg, 1, 100 * 1024 * 1024,
&errstr);
if (errstr != NULL)
usage();
limit_kbps *= 1024; /* kbps */
bandwidth_limit_init(&bwlimit, limit_kbps, COPY_BUFLEN);
break;
case 'p':
pflag = 1;
break;
case 'r':
iamrecursive = 1;
break;
case 'S':
ssh_program = xstrdup(optarg);
break;
case 'v':
addargs(&args, "-v");
addargs(&remote_remote_args, "-v");
verbose_mode = 1;
break;
case 'q':
addargs(&args, "-q");
addargs(&remote_remote_args, "-q");
showprogress = 0;
break;
/* Server options. */
case 'd':
targetshouldbedirectory = 1;
break;
case 'f': /* "from" */
iamremote = 1;
fflag = 1;
break;
case 't': /* "to" */
iamremote = 1;
tflag = 1;
#ifdef HAVE_CYGWIN
setmode(0, O_BINARY);
#endif
break;
default:
usage();
}
argc -= optind;
argv += optind;
if ((pwd = getpwuid(userid = getuid())) == NULL)
fatal("unknown user %u", (u_int) userid);
if (!isatty(STDOUT_FILENO))
showprogress = 0;
if (pflag) {
/* Cannot pledge: -p allows setuid/setgid files... */
} else {
if (pledge("stdio rpath wpath cpath fattr tty proc exec",
NULL) == -1) {
perror("pledge");
exit(1);
}
}
remin = STDIN_FILENO;
remout = STDOUT_FILENO;
if (fflag) {
/* Follow "protocol", send data. */
(void) response();
source(argc, argv);
exit(errs != 0);
}
if (tflag) {
/* Receive data. */
sink(argc, argv);
exit(errs != 0);
}
if (argc < 2)
usage();
if (argc > 2)
targetshouldbedirectory = 1;
remin = remout = -1;
do_cmd_pid = -1;
/* Command to be executed on remote system using "ssh". */
(void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
verbose_mode ? " -v" : "",
iamrecursive ? " -r" : "", pflag ? " -p" : "",
targetshouldbedirectory ? " -d" : "");
(void) signal(SIGPIPE, lostconn);
if (colon(argv[argc - 1])) /* Dest is remote host. */
toremote(argc, argv);
else {
if (targetshouldbedirectory)
verifydir(argv[argc - 1]);
tolocal(argc, argv); /* Dest is local host. */
}
/*
* Finally check the exit status of the ssh process, if one was forked
* and no error has occurred yet
*/
if (do_cmd_pid != -1 && errs == 0) {
if (remin != -1)
(void) close(remin);
if (remout != -1)
(void) close(remout);
if (waitpid(do_cmd_pid, &status, 0) == -1)
errs = 1;
else {
if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
errs = 1;
}
}
exit(errs != 0);
}
/* Callback from atomicio6 to update progress meter and limit bandwidth */
static int
scpio(void *_cnt, size_t s)
{
off_t *cnt = (off_t *)_cnt;
*cnt += s;
if (limit_kbps > 0)
bandwidth_limit(&bwlimit, s);
return 0;
}
static int
do_times(int fd, int verb, const struct stat *sb)
{
/* strlen(2^64) == 20; strlen(10^6) == 7 */
char buf[(20 + 7 + 2) * 2 + 2];
(void)snprintf(buf, sizeof(buf), "T%llu 0 %llu 0\n",
(unsigned long long) (sb->st_mtime < 0 ? 0 : sb->st_mtime),
(unsigned long long) (sb->st_atime < 0 ? 0 : sb->st_atime));
if (verb) {
fprintf(stderr, "File mtime %lld atime %lld\n",
(long long)sb->st_mtime, (long long)sb->st_atime);
fprintf(stderr, "Sending file timestamps: %s", buf);
}
(void) atomicio(vwrite, fd, buf, strlen(buf));
return (response());
}
static int
parse_scp_uri(const char *uri, char **userp, char **hostp, int *portp,
char **pathp)
{
int r;
r = parse_uri("scp", uri, userp, hostp, portp, pathp);
if (r == 0 && *pathp == NULL)
*pathp = xstrdup(".");
return r;
}
void
toremote(int argc, char **argv)
{
char *suser = NULL, *host = NULL, *src = NULL;
char *bp, *tuser, *thost, *targ;
int sport = -1, tport = -1;
arglist alist;
int i, r;
u_int j;
memset(&alist, '\0', sizeof(alist));
alist.list = NULL;
/* Parse target */
r = parse_scp_uri(argv[argc - 1], &tuser, &thost, &tport, &targ);
if (r == -1) {
fmprintf(stderr, "%s: invalid uri\n", argv[argc - 1]);
++errs;
goto out;
}
if (r != 0) {
if (parse_user_host_path(argv[argc - 1], &tuser, &thost,
&targ) == -1) {
fmprintf(stderr, "%s: invalid target\n", argv[argc - 1]);
++errs;
goto out;
}
}
if (tuser != NULL && !okname(tuser)) {
++errs;
goto out;
}
/* Parse source files */
for (i = 0; i < argc - 1; i++) {
free(suser);
free(host);
free(src);
r = parse_scp_uri(argv[i], &suser, &host, &sport, &src);
if (r == -1) {
fmprintf(stderr, "%s: invalid uri\n", argv[i]);
++errs;
continue;
}
if (r != 0) {
parse_user_host_path(argv[i], &suser, &host, &src);
}
if (suser != NULL && !okname(suser)) {
++errs;
continue;
}
if (host && throughlocal) { /* extended remote to remote */
xasprintf(&bp, "%s -f %s%s", cmd,
*src == '-' ? "-- " : "", src);
if (do_cmd(host, suser, sport, bp, &remin, &remout) < 0)
exit(1);
free(bp);
xasprintf(&bp, "%s -t %s%s", cmd,
*targ == '-' ? "-- " : "", targ);
if (do_cmd2(thost, tuser, tport, bp, remin, remout) < 0)
exit(1);
free(bp);
(void) close(remin);
(void) close(remout);
remin = remout = -1;
} else if (host) { /* standard remote to remote */
if (tport != -1 && tport != SSH_DEFAULT_PORT) {
/* This would require the remote support URIs */
fatal("target port not supported with two "
"remote hosts without the -3 option");
}
freeargs(&alist);
addargs(&alist, "%s", ssh_program);
addargs(&alist, "-x");
addargs(&alist, "-oClearAllForwardings=yes");
addargs(&alist, "-n");
for (j = 0; j < remote_remote_args.num; j++) {
addargs(&alist, "%s",
remote_remote_args.list[j]);
}
if (sport != -1) {
addargs(&alist, "-p");
addargs(&alist, "%d", sport);
}
if (suser) {
addargs(&alist, "-l");
addargs(&alist, "%s", suser);
}
addargs(&alist, "--");
addargs(&alist, "%s", host);
addargs(&alist, "%s", cmd);
addargs(&alist, "%s", src);
addargs(&alist, "%s%s%s:%s",
tuser ? tuser : "", tuser ? "@" : "",
thost, targ);
if (do_local_cmd(&alist) != 0)
errs = 1;
} else { /* local to remote */
if (remin == -1) {
xasprintf(&bp, "%s -t %s%s", cmd,
*targ == '-' ? "-- " : "", targ);
if (do_cmd(thost, tuser, tport, bp, &remin,
&remout) < 0)
exit(1);
if (response() < 0)
exit(1);
free(bp);
}
source(1, argv + i);
}
}
out:
free(tuser);
free(thost);
free(targ);
free(suser);
free(host);
free(src);
}
void
tolocal(int argc, char **argv)
{
char *bp, *host = NULL, *src = NULL, *suser = NULL;
arglist alist;
int i, r, sport = -1;
memset(&alist, '\0', sizeof(alist));
alist.list = NULL;
for (i = 0; i < argc - 1; i++) {
free(suser);
free(host);
free(src);
r = parse_scp_uri(argv[i], &suser, &host, &sport, &src);
if (r == -1) {
fmprintf(stderr, "%s: invalid uri\n", argv[i]);
++errs;
continue;
}
if (r != 0)
parse_user_host_path(argv[i], &suser, &host, &src);
if (suser != NULL && !okname(suser)) {
++errs;
continue;
}
if (!host) { /* Local to local. */
freeargs(&alist);
addargs(&alist, "%s", _PATH_CP);
if (iamrecursive)
addargs(&alist, "-r");
if (pflag)
addargs(&alist, "-p");
addargs(&alist, "--");
addargs(&alist, "%s", argv[i]);
addargs(&alist, "%s", argv[argc-1]);
if (do_local_cmd(&alist))
++errs;
continue;
}
/* Remote to local. */
xasprintf(&bp, "%s -f %s%s",
cmd, *src == '-' ? "-- " : "", src);
if (do_cmd(host, suser, sport, bp, &remin, &remout) < 0) {
free(bp);
++errs;
continue;
}
free(bp);
sink(1, argv + argc - 1);
(void) close(remin);
remin = remout = -1;
}
free(suser);
free(host);
free(src);
}
void
source(int argc, char **argv)
{
struct stat stb;
static BUF buffer;
BUF *bp;
off_t i, statbytes;
size_t amt, nr;
int fd = -1, haderr, indx;
char *last, *name, buf[2048], encname[PATH_MAX];
int len;
for (indx = 0; indx < argc; ++indx) {
name = argv[indx];
statbytes = 0;
len = strlen(name);
while (len > 1 && name[len-1] == '/')
name[--len] = '\0';
if ((fd = open(name, O_RDONLY|O_NONBLOCK, 0)) < 0)
goto syserr;
if (strchr(name, '\n') != NULL) {
strnvis(encname, name, sizeof(encname), VIS_NL);
name = encname;
}
if (fstat(fd, &stb) < 0) {
syserr: run_err("%s: %s", name, strerror(errno));
goto next;
}
if (stb.st_size < 0) {
run_err("%s: %s", name, "Negative file size");
goto next;
}
unset_nonblock(fd);
switch (stb.st_mode & S_IFMT) {
case S_IFREG:
break;
case S_IFDIR:
if (iamrecursive) {
rsource(name, &stb);
goto next;
}
/* FALLTHROUGH */
default:
run_err("%s: not a regular file", name);
goto next;
}
if ((last = strrchr(name, '/')) == NULL)
last = name;
else
++last;
curfile = last;
if (pflag) {
if (do_times(remout, verbose_mode, &stb) < 0)
goto next;
}
#define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
snprintf(buf, sizeof buf, "C%04o %lld %s\n",
(u_int) (stb.st_mode & FILEMODEMASK),
(long long)stb.st_size, last);
if (verbose_mode)
fmprintf(stderr, "Sending file modes: %s", buf);
(void) atomicio(vwrite, remout, buf, strlen(buf));
if (response() < 0)
goto next;
if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) {
next: if (fd != -1) {
(void) close(fd);
fd = -1;
}
continue;
}
if (showprogress)
start_progress_meter(curfile, stb.st_size, &statbytes);
set_nonblock(remout);
for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
amt = bp->cnt;
if (i + (off_t)amt > stb.st_size)
amt = stb.st_size - i;
if (!haderr) {
if ((nr = atomicio(read, fd,
bp->buf, amt)) != amt) {
haderr = errno;
memset(bp->buf + nr, 0, amt - nr);
}
}
/* Keep writing after error to retain sync */
if (haderr) {
(void)atomicio(vwrite, remout, bp->buf, amt);
memset(bp->buf, 0, amt);
continue;
}
if (atomicio6(vwrite, remout, bp->buf, amt, scpio,
&statbytes) != amt)
haderr = errno;
}
unset_nonblock(remout);
if (fd != -1) {
if (close(fd) < 0 && !haderr)
haderr = errno;
fd = -1;
}
if (!haderr)
(void) atomicio(vwrite, remout, "", 1);
else
run_err("%s: %s", name, strerror(haderr));
(void) response();
if (showprogress)
stop_progress_meter();
}
}
void
rsource(char *name, struct stat *statp)
{
DIR *dirp;
struct dirent *dp;
char *last, *vect[1], path[PATH_MAX];
if (!(dirp = opendir(name))) {
run_err("%s: %s", name, strerror(errno));
return;
}
last = strrchr(name, '/');
if (last == NULL)
last = name;
else
last++;
if (pflag) {
if (do_times(remout, verbose_mode, statp) < 0) {
closedir(dirp);
return;
}
}
(void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
(u_int) (statp->st_mode & FILEMODEMASK), 0, last);
if (verbose_mode)
fmprintf(stderr, "Entering directory: %s", path);
(void) atomicio(vwrite, remout, path, strlen(path));
if (response() < 0) {
closedir(dirp);
return;
}
while ((dp = readdir(dirp)) != NULL) {
if (dp->d_ino == 0)
continue;
if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
continue;
if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
run_err("%s/%s: name too long", name, dp->d_name);
continue;
}
(void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
vect[0] = path;
source(1, vect);
}
(void) closedir(dirp);
(void) atomicio(vwrite, remout, "E\n", 2);
(void) response();
}
#define TYPE_OVERFLOW(type, val) \
((sizeof(type) == 4 && (val) > INT32_MAX) || \
(sizeof(type) == 8 && (val) > INT64_MAX) || \
(sizeof(type) != 4 && sizeof(type) != 8))
void
sink(int argc, char **argv)
{
static BUF buffer;
struct stat stb;
enum {
YES, NO, DISPLAYED
} wrerr;
BUF *bp;
off_t i;
size_t j, count;
int amt, exists, first, ofd;
mode_t mode, omode, mask;
off_t size, statbytes;
unsigned long long ull;
int setimes, targisdir, wrerrno = 0;
char ch, *cp, *np, *targ, *why, *vect[1], buf[2048], visbuf[2048];
struct timeval tv[2];
#define atime tv[0]
#define mtime tv[1]
#define SCREWUP(str) { why = str; goto screwup; }
if (TYPE_OVERFLOW(time_t, 0) || TYPE_OVERFLOW(off_t, 0))
SCREWUP("Unexpected off_t/time_t size");
setimes = targisdir = 0;
mask = umask(0);
if (!pflag)
(void) umask(mask);